Abstract: A system and method for printing documents that are difficult to forge and that are easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath the surface and a substrate that includes a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration-enhancing agent may be coated onto a portion of the substrate or embedded within the substrate.

Abstract: A toner for printing documents that are difficult to forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image.

Abstract: The present invention relates to a nanocapsule composition and its toner composition for thermosensitive rewritable recording media, more particularly to a core/shell-type nanocapsule composition for thermosensitive rewritable recording media, which has fine capsule of a few nanometers in size and superior recording property and heat stability, a preparation method thereof and its toner composition for thermosensitive rewritable recording media. The toner composition according to the present invention is suitable for high-resolution electrostatic image toner, paper and film. Also, it enables reuse of recording media because the recording is erased when the media (e.g.: paper and OHP film) is heated to a high temperature.

Abstract: A black toner comprising a resin binder; and a black colorant comprising a composite oxide of two or more metals and at least one of a blue dye or pigment and a green dye or pigment. The black toner can be suitably used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: The present invention provides an alkylenebisnaphthol derivative represented by formula [I]: 1

Abstract: It is a toner for optical fixing which contains a binder resin, a colorant, and an infrared light absorbent, and the infrared light absorbent has a coloring opacity of 20 or less, and of phthalocyanine compound and/or naphthalocyanine compound.

Abstract: A toner for developing an electrostatic image, comprising, a binder resin, a colorant, a charge control agent, and a parting agent, and wherein: a volume average particle diameter (Dv) of toner particles is 3 to 10 &mgr;m; a ratio (Dv/Dp) of Dv to a number average particle diameter (Dp) is 1 to 1.3; an average circle degree is 0.93 to 0.995; and location parameter of island-shaped separate phase is 25 number % or more, wherein the location parameter is the percentage of such sectional photo image of toner particles where a maximum diameter of island-shaped separate phase is 1 &mgr;m or more and an outermost portion of said island-shaped separate phase is present at the depth of 0.01 to 0.15 time of the particle diameter of each toner particle under the surface.

Abstract: The present invention provides an electrostatic charge developing toner which uses a &bgr;-type copper phthalocyanine pigment that has a BET specific surface area of 90 m2/g or greater as determined by the nitrogen adsorption method.

Abstract: It is an object of the present invention to provide a dispersing agent for a pigment capable of finely dispersing a pigment in a dispersion medium. The present invention provides a dispersing agent for a pigment comprising at least a metallic compound having a specific structure with a central metal capable of taking a penta-coordinated structure, and n-electron-donating compound having affinity for the dispersion medium and capable of being coordinated with the central metal of the metallic compound.

Abstract: This invention provides: a color toner to be fixed on a recording medium with a flash light comprising a binder resin, an infrared ray absorbent and a coloring agent for mainly developing a yellow color, wherein the coloring agent is C.I. Pigment Yellow 180 or C.I. Pigment Yellow 185; a color toner to be fixed on a recording medium with a flash light comprising a binder resin, an infrared ray absorbent and a coloring agent for mainly developing a magenta color, wherein the coloring agent is C.I. Pigment Violet 19; and a color toner to be fixed on a recording medium with a flash light comprising a binder resin, an infrared ray absorbent and a coloring agent for mainly developing a cyan color, wherein the coloring agent is C.I. Pigment Blue 15. Also disclosed are a color toner set comprising these color toners and an image forming apparatus employing at least one of the color toners or the color toner set.

Abstract: The present invention relates to a toner, comprising a binder resin, a colorant and two kinds of infrared absorbing agents, and

Abstract: In a color toner for forming an image, comprising at least a binder resin and a colorant, light-absorbing fine composite particles comprising core particles and at least two coating layers having different refractive indexes laminated on the surface of the core particles or other IR-absorbing compounds such as an azulene compound having a specific structure are used as an infrared absorbing compound. The color toner is used in an electrophotographic color image forming apparatus using a photofixing system for fixing a toner image.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: A toner containing a binder resin, a colorant, a charge control agent, and a thiazolyl disulfide compound or a thiuram disulfide compound. A process for producing a toner comprising polymerization of a polymerizable monomer composition that contains a polymerizable monomer and a colorant in an aqueous medium in the presence of a compound selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: A toner for printing documents that are difficult to forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image.

Abstract: A composition comprised of resin and colorant, and wherein the colorant is stabilized with an ultra-violet stabilizer.

Abstract: A process for lowering the charge/mass (Q/m) ratio of toner particles formed by limited coalescence includes: forming an organic phase containing a water-immiscible liquid, pigment, a quaternary ammonium tetraphenylborate salt, and a polymeric material selected from the group consisting of an acrylic resin, a methacrylic resin, a styrene-acrylic resin, a styrene-methacrylic resin, a polyamide, and a polyester. The organic phase is dispersed in an aqueous phase containing a solid colloidal stabilizer, and a suspension of small droplets of the organic phase is formed in the aqueous phase by high shear agitation. The water-immiscible liquid is removed from the small droplets, thereby forming a suspension in the aqueous phase of small, non-spherically shaped solid particles, which are separated from the aqueous phase and dried. The quaternary ammonium tetraphenylborate salt is included in the organic phase in an amount effective for lowering the charge/mass (Q/m) ratio of the toner particles.

Abstract: A composition comprised of resin and colorant, and wherein the colorant is stabilized with an ultra-violet stabilizer.

Abstract: Coupled alcohol ethoxylates made by reacting alcohol ethoxylates with a diisocyanate have been found to improve the thermal properties of toner compositions and powder coatings. The alcohol ethoxylates have saturated linear alcohol portions of from about 20-70 carbon atom chain lengths. The diisocyanates may be aromatic diisocyanates such as toluene diisocyanate (TDI) and/or methylenediphenyl diisocyanate (MDI). Preferably, about one mole of diisocyanate is reacted with about two moles of the alcohol ethoxylates to form the coupled alcohol ethoxylates that are useful compatibilizers to improve the homogeneity of toner compositions and powder coating compositions.

Abstract: Disclosed are marking particles comprising a resin, a chelating agent, and a spiropyran material which is of the formula The marking particles are prepared by an emulsion aggregation process.

Abstract: The present invention relates to a nanocapsule composition and its toner composition for thermosensitive rewritable recording media, more particularly to a core/shell-type nanocapsule composition for thermosensitive rewritable recording media, which has fine capsule of a few nanometers in size and superior recording property and heat stability, a preparation method thereof and its toner composition for thermosensitive rewritable recording media. The toner composition according to the present invention is suitable for high-resolution electrostatic image toner, paper and film. Also, it enables reuse of recording media because the recording is erased when the media (e.g.: paper and OHP film) is heated to a high temperature.

Abstract: A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.

Abstract: The present invention provides an image forming method for obtaining excellent color fixed images with a smaller amount of light energy.

Abstract: A magenta toner for electrophotography includes a binder resin and a colorant, wherein the toner contains at least a naphthol pigment having a structure represented by the following general formula (1) as the colorant, and has a shape factor SF1 of 110 to 140 obtained by the equation below and a volume average particle size of 2 to 9 &mgr;m: 1

Abstract: A color toner selected from the group consisting of a yellow toner, a magenta toner, and a cyan toner, and mixtures thereof, which includes a binder resin and a color pigment, wherein a C* value of a fixed red image formed by a combination of a layer of the yellow toner having a weight of 8 g/m2 and a layer of the magenta toner having a weight of 8 g/m2 is not less than 80, and wherein a hexagon formed by six points in a *-b* chromaticity coordinates of a fixed yellow image formed by a layer of the yellow toner having a weight of 8 g/m2, the fixed red image, a fixed magenta image formed by a layer of the magenta toner having a weight of 8 g/m2, a fixed blue image formed by a combination of a layer of the magenta toner having a weight of 8 g/m2 and a layer of the cyan toner having a weight of 8 g/m2, a fixed cyan image formed by a layer of the cyan toner having a weight of 8 g/m2, and a fixed green image formed by a combination of a layer of the cyan toner of 8 g/m2 and a layer of the yellow toner having a wei

Abstract: A color toner for electrophotography having excellent fixability and void resistance is capable of forming a high-quality image. The color toner for electrophotography comprises a binder resin and is a magenta toner, and used in combination with at least any of yellow toner and cyan toner. The storage modulus (G′100) (100° C.) of the binder resin is (1/1.1) to (1/10) times the storage modulus (G′100) (100° C.) of a binder resin contained in the yellow toner and the cyan toner. In addition, the color toner for electrophotography comprises a binder resin, C.I. pigment Violet 19, and an infrared absorbent. The color toner is a magenta toner used in combination with at least any of an yellow toner and a cyan toner. The content of the infrared absorbent in the magenta toner is higher than the content of an infrared absorbent in the yellow toner and the cyan toner.

Abstract: It is an object of the present invention to provide a dispersing agent for a pigment capable of finely dispersing a pigment in a dispersion medium. The present invention provides a dispersing agent for a pigment comprising at least a metallic compound having a specific structure with a central metal capable of taking a penta-coordinated structure, and n-electron-donating compound having affinity for the dispersion medium and capable of being coordinated with the central metal of the metallic compound.

Abstract: The present invention discloses a flash fixing color toner for use in an image forming process, which comprises a binder resin, a coloring agent, and an infrared absorbent, wherein negative ions form part of the infrared absorbent, and the negative ions include toluenesulfonic acid ion (C6H4(CH3)SO3−), nitric acid ion (NO3−) or hexafluorophosphoric acid ion (PF6−). Further, the present invention discloses an image forming process, which is characterized by using the flash fixing color toner.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: The invention relates to a toner composition comprising a compound represented by formula (I): 1

Abstract: A color toner is provided that enables printing of all colors, including black, either comprising one particle system that, depending on exposure to a particular wavelength, provides a desired color or comprising a plurality of layers, each of which provide a different color upon exposure to a different wavelength. The color toner comprises three layers, and, optionally, a base, or fixer, layer, each color layer containing separate color grain centers directed to a specific color, including color-sensitive silver halide (AgX) crystals, at least one developing agent, and color coupling chemistry. Advantageously, colors can be created or modified through the application of light (digital), as opposed to application of chemicals. Further, true black is obtainable with a single toner. Finally, image processing is mechanically and chemically simplified.

Abstract: A flash fixing color toner for use in an image forming process includes a binder resin and a hue-altering coloring agent, wherein the hue-altering coloring agent alters, at a time of irradiation of flash light, an initial hue of the color toner into a secondary hue, so that the color toner is fixed to a recording medium by the irradiation of flash light, and a color image is substantially formed with the secondary hue of the color toner.

Abstract: In a color toner for forming an image, comprising at least a binder resin and a colorant, light-absorbing fine composite particles comprising core particles and at least two coating layers having different refractive indexes laminated on the surface of the core particles or other IR-absorbing compounds such as an azulene compound having a specific structure are used as an infrared absorbing compound. The color toner is used in an electrophotographic color image forming apparatus using a photofixing system for fixing a toner image.

Abstract: A color toner is provided that enables printing of all colors, including black, either comprising one particle system that, depending on exposure to a particular wavelength, provides a desired color or comprising a plurality of layers, each of which provide a different color upon exposure to a different wavelength. The color toner comprises three layers, and, optionally, a base, or fixer, layer, each color layer containing separate color grain centers directed to a specific color, including color-sensitive silver halide (AgX) crystals, at least one developing agent, and color coupling chemistry. The optional base layer (or a separate layer associated with each color layer) is employed if chemical fixing, instead of electronic fixing, is required. If used, the fixer layer(s) comprise(s) fixing agents for fixing unexcited silver halide by saturating the unreacted silver halide with electrons and to terminate developer and color coupler reactions.

Abstract: A color toner to which flash light is applied and is fixed on a recording medium at least includes a binding resin, a colorant, and a infrared absorbent. PAS intensity thereof obtained from integration of infrared PAS spectrum obtained based on photoacoustic spectroscopy (PAS) analytical measurement through a range between 800 and 2000 nm is in a range between 0.01 and 0.2 assuming that the value of carbon black is 1.

Abstract: In an imaging color toner employing a photofixing system, a binder resin, which contains, as a principal component, a polyester resin obtained by mixing a first polyester resin having a softening point Tsp of not lower than 120° C. and lower than 170° C. with a second polyester resin having a softening point Tsp of not lower than 80° C. and lower than 110° C. in a weight ratio of 80:20 to 20:80, is used. The color toner is used in an electrophotographic process and other imaging processes.

Abstract: A dispersing agent for a pigment, comprising a specific compound having a structure wherein a phthalocyanine type molecular skeleton which is adsorptive on the pigment and an oligomer unit or polymer unit which prevents re-agglomeration of the pigment to bring out the effect of dispersion are covalently bonded, and having affinity for a medium or a solvent. Also disclosed are a pigment-dispersion composition containing the dispersing agent, a toner prepared using a pigment having been treated with the dispersing agent, and a process for producing such a toner.

Abstract: A color toner to which flash light is applied and is fixed on a recording medium at least includes a binding resin, a colorant, and a infrared absorbent. PAS intensity thereof obtained from integration of infrared PAS spectrum obtained based on photoacoustic spectroscopy (PAS) analytical measurement through a range between 800 and 2000 nm is in a range between 0.01 and 0.2 assuming that the value of carbon black is 1.

Abstract: A flash fixing toner includes a binder resin, a coloring agent, a charge control agent, a wax, and an infrared ray absorbing agent. The infrared ray absorbing agent is held within the wax, so as to suppress contact between the infrared ray absorbing agent and the charge control agent.

Abstract: A composition for electrostatographic toner particles includes an organic binder polymer and a dye having the structure wherein Z represents a thiazole moiety II

Abstract: A toner, particularly a color toner suitable for full-color image formation through a substantially oil-less heat-pressure fixing device, is formed from at least a binder resin, a colorant and a wax. The binder resin comprises a polyester-based resin selected from the group consisting of (a) a polyester resin, (b) a hybrid resin having a polyester unit and a vinyl polymer unit, and (c) a mixture of these resins. The wax is characterized by including a structural unit including an OH group, an amide, or an ester group at a specific position.

Abstract: A black toner comprising a resin binder; and a black colorant comprising a composite oxide of two or more metals and at least one of a blue dye or pigment and a green dye or pigment. The black toner can be suitably used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: In an electrophotographic color toner which contains at least a binder resin and a colorant, a calixarene compound is used in combination with an infrared absorbing compound which shows a light absorption peak at a wavelength ranging from 700 to 1000 nm.

Abstract: A process for forming non-spherical toner particles by limited coalescence comprises: forming an organic phase comprising a polymeric material, a pigment, a quaternary ammonium tetraphenylborate salt, and a water-immiscible liquid; dispersing the organic phase in an aqueous phase containing a solid colloidal stabilizer; forming a suspension of small droplets of the organic phase in the aqueous phase by high shear agitation; removing the water-immiscible liquid from the small droplets, thereby forming a suspension of small solid particles in the aqueous phase; and separating and drying the solid particles, which are toner particles having a non-spherical shape.

Abstract: Disclosed are marking particles comprising a resin, a chelating agent, and a spiropyran material which is of the formula 1

Abstract: An optical fixing toner includes an infrared ray absorbing agent which is made of one element or a mixture of a plurality of elements 5 selected from a group of elements consisting of oxides, sulfides, halides, complex salts and acid chlorides of lanthanoide.

Abstract: It is a toner for optical fixing which contains a binder resin, a colorant, and an infrared light absorbent, and the infrared light absorbent has a coloring opacity of 20 or less, and of phthalocyanine compound and/or naphthalocyanine compound.

Abstract: It is a toner for optical fixing which contains a binder resin, a colorant, and an infrared light absorbent, and the infrared light absorbent has a coloring opacity of 20 or less, and of phthalocyanine compound and/or naphthalocyanine compound.

Abstract: Disclosed are marking particles comprising a first polymer a second polymer, a chelating agent, and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2. The marking particles comprise a core containing the first polymer in which is dispersed the chelating agent and the spiropyran and encapsulated within a shell of the second polymer formulated by an interfacial polymerization.